Improvement in couplings for joints of wooden pumps



OQWBLLS. Coupling for vJoints of Wooden Pumps. No. 215,30?. Patented May/13,1879.'

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UNITED STATES; PATE-NT Orme-ri OSBERN WELLS, OF NEWBERRY, SOUTHGAROLINA.

IMPROVEMENT IN COUPLINGS FOR JGINTS O F WOODEN PUMPS.

Specification forming part of Letters Patent No. 215,307, dated May 13, 1879; application iiled November 2, 1878.

To all whom 'it may concern:

Be it known that I, OsBERN WELLS, of N ewberry, in the county of Newberry and State of `South Carolina, have invented certain new and my former patent, No. 205,709, for pipe-coupling.

Hi'therto much difficulty has been experienced in making these joints in such a manner that the valves could be readily placed in position, especially when the bore of the separate joints of the pump were of the same diameter 5 but by using my improved coupling this difficulty is avoided, and the joints are made and the valves placed in position with equal facility, whether the bore of theseparate pieces be the same or different from each other, as when a working-barrel is joined directly to the suction-pipe, with the valve upon the top of the latter, all as will be hereinafter lfully described, and the points of novelty speciiically designated in the claims.

In the drawings accompanying this specification, Figure l is a side view of the coupling. Fig. 2 is a longitudinal section through the coupling, and a part of two contiguous portions ofthe pump logs or pipes with the valve in place upon the top of the lower piece. Fig. 3 shows a modification of my improved coupling applied to a joint in which the lower piece is the suction-pipe and the upper the workingbarrel, with'the valve on top of the suctionpipe and the pump-bucket in the Workin gbarrel.

A represents the coupling, formed with a downwardly-projecting band, b, which encircles the top of the lower or suction pipe, B, which, if large, is reduced till of the same diameter as the inside of the band, thus preventing all danger of splitting the pipe when the coupling is forced uponit. An inner wedgeshaped ring, a., projects downward within the band b, and, in making the joint, is driven into the end of the suction pipe or log B, thus compressing the wood between the ring and band in such a manner as to form a perfectlytight and, as it were, packed joint.

The inner side of the ring a, being straight, does not force the wood inward, but leaves it intact to receive the valve D, which is secured to the top of the pipe or log B within the coupling by screws c or other suitable means.

Projecting upward from the body of thecoupling is the extension d, which incloses the valvey chamber C, and, when the bore of the pipe or log E is the saine as that of the part B, is made conical, so as to enter a conical enlargementin the lower end of the part E, thus forming a perfect valve-chamber, and at the same time reducing the internal chamber of the upper part of the coupling to that of the bore of the pipe B 5 but where the upper joint or part, E, is used as a working-barrel for pump-bucket F, therefore requiring a larger bore than the lower part, B, this extension d of the coupling is made of equal internal diameter from end to end, thus serving, if desired, for the principal portion of the working-barrel exposed to the friction of the bucket, and insuring great durability.

Encircling the extension d is a wedge-shaped ring, e, straight upon the outside, tapering upon the inside, serving, like the ring a, to compress the wood, not outwardly against a band, but inwardly against the extension d, making asperfectly-tight joint without incurring the slightest dan ger of splitting the pipe or log.

These couplings may be made of cast metal,

consisting of a body provided with the band b, wedge-shaped ring a, extension d, and ring e, substantially as specified.

2. The pipe-coupling provided with the band band Wedge-shaped ring ,in combination with the pipe or log B, as and for the purpose set forth. Y

3. The pipe-coupling provided With the eX- tension d, forming a Valve-chamber, and the wedgefshaped ring e, encircling the extension,

in combination with the log or pipe E, substantially as and for the purpose described.

In testimony that I claim the foregoing as my own I hereunto znfx my signature in presence of two witnesses.

OYSBERN WELLS.

Witnesses J AMEs PACKER, S. F. FANT. 

